Kevin John Grannen

Title: Kevin John Grannen: Innovator in Magnetic Recording Media

Introduction

Kevin John Grannen is a notable inventor based in Fremont, CA (US). He has made significant contributions to the field of magnetic recording media, holding a total of 9 patents. His work focuses on enhancing the performance and durability of hard disk technologies.

Latest Patents

Grannen's latest patents include innovations such as thin-film magnetic recording media with a dual intermediate layer structure for increased coercivity. He has developed ion beam-deposited, nitrogen-doped carbon-hydrogen (C:H) films that exhibit substantially lower resistivities compared to their undoped counterparts. These films are suitable for use as hard, abrasion-resistant overcoat layers for magnetic recording media, including hard disks. The nitrogen atom content of these films is carefully controlled to range from about 5 to about 25 atomic percent by selecting the appropriate ratio of hydrocarbon gas flow to nitrogen gas flow. The resultant ion beam-deposited i-C:HN films demonstrate a reduced tendency for charge build-up during hard disk operation due to their lower resistivity compared to conventional amorphous carbon-hydrogen materials.

Career Highlights

Throughout his career, Grannen has worked with prominent companies in the technology sector, including Seagate Technology Incorporated and Seagate Technologies, Inc. His expertise in the field has allowed him to contribute to advancements in magnetic recording technologies.

Collaborations

Grannen has collaborated with notable coworkers such as Jing Gui and Xiaoding Ma, further enhancing the innovative work being done in his field.

Conclusion

Kevin John Grannen is a distinguished inventor whose work in magnetic recording media has led to significant advancements in technology. His contributions continue to influence the development of more efficient and durable hard disk solutions.